JPS62292302A - Vertical numerical control lathe with work index table - Google Patents

Abstract

PURPOSE:To improve accuracy and efficiency in working by supplying materials at a point in which the center of a vertical spindle guide movable vertically coincides with that of a material tray movable horizontally to the spindle and enabling two tool rests moved horizontally according to the spindle to be used for a combined fixing and rotating tool. CONSTITUTION:A spindle 1 clamps a material 9 on a work index table 22 and then a pushing pin 33 pushes up a tray 28 while the spindle 1 is raised. Then, the work index table 22 retreats to carry out the same or different cutting operations. And after the competion of cutting work, a tool rest retreats and instead the work index table 22 advances. The spindle 1 clamping the cut material is lowered to fit it in the tray 28. Next, the work index table 22 is rotated so that unworked material is fixedly set. Here, high accuracy working and production efficiency of a variety of workpieces can be improved by interchangeability between a turret tool rest with fixed tool, turret tool rest with rotary tool and combined tool rest.

Description

Detailed description of the invention 3 Detailed description of the invention
The present invention relates to a vertical numerically controlled lathe that has a turret mechanism with three turrets, has good machining accuracy and work efficiency, and has higher productivity than conventional lathes.

B. Prior Art Conventional numerically controlled lathes employ a computer-based numerical control system, but loading and unloading materials on the lathe is done manually, which is inefficient. In addition, there are cases in which a Robrad is used for attaching and removing materials, but this requires a large investment, which increases the cost and is rather disadvantageous.

Furthermore, if we look specifically at conventional numerically controlled lathes, the main spindle that grips the material during cutting is mostly horizontal, and Jinren is an example of a manual or robotic method for feeding the material. However, the horizontal spindle requires a large amount of floor space, and manual material feeding has many problems, such as extremely poor efficiency.

In the current state of the prior art, Sagi's invention, which was filed by a non-inventor, combines the headstock mechanism, work index table mechanism, and turret mechanism, makes the functions of each mechanism highly accurate and highly efficient, and improves the inter-mechanism between each mechanism. This system streamlines the cooperative operation of the two systems. The headstock mechanism consists of a vertical headstock and a spindle, and the function of the spindle is to grip the material at its tip.
As a function for this purpose, movement in the direction of the spindle is performed by vertical movement of the headstock, and the spindle can also be rotated. The advantage of this headstock mechanism is that it is vertical, so it takes up less floor space, and the work index table mechanism allows material to be fed from the periphery of a horizontal rotary circular table, instead of the traditional manual or robotic material feeding method. Materials can be placed at regular intervals and rotated appropriately, and can also be reciprocated toward the center line of the spindle of the headstock. With this configuration, when the material placed on the table and the headstock spindle are in the same position, the spindle can grip the material with high precision, and it matches the highly precise movement of the tool post Sakakitaka to achieve high efficiency, high precision, and labor saving. It became possible to perform cutting work.

Problems to be Solved by the Invention CAlthough the lathe technology invented by the present inventor has made significant progress in terms of processing accuracy, high efficiency, and mass production, in addition to high precision and high efficiency, However, this is still insufficient in view of the industrial trends that demand even higher productivity, and there is a need to further double efficiency and productivity in response to these trends.

Measures for Solving Problems 1 From the above points of view, the present invention provides a lathe technology comprising a pattern headstock mechanism, a work index table mechanism, a turret mechanism, and a numerical control mechanism, which are the previous inventions of the present inventors. As a result of further investigation based on the above, the present invention (specific invention) was obtained.

The present invention consists of three mechanisms: a headstock mechanism, a work index table mechanism, and a tool post mechanism, and a numerical control mechanism that operates them in conjunction with each other. The work index table mechanism consists of one main shaft having a material gripping function, and the material receiving tray facing the main shaft is located at the center of the main shaft among the material receiving trays provided at equal intervals around the entire periphery of a rotatable circular table. The material supplying operation can be performed at a point where the horizontal reciprocating rod moves toward the line and the center of the rod coincides with the center of the material receiving tray, and the tool rest mechanism simultaneously moves in response to the movement of the main shaft. Two turrets that perform the same or different operations or
), each of which can perform horizontal reciprocating movement toward the center line of the main shaft, and the tool rest can be used as either an identification tool type and a rotating tool type, or a fixed tool type and a rotating tool type, and The numerical control mechanism is a lathe that stores work programs and controls the operations of each of the mechanisms.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the lathe of the present invention, FIG. 1a is a sectional view of its headstock, and FIG. 2 is a plan view thereof. The headstock mechanism that can move up and down is the main spindle 1.
The main bearing 2 that supports the main spindle, the main spindle motor 4, the headstock frame 3 that supports the main bearing, the vertical axis motor 13 (servo motor) that moves the headstock frame up and down, the power chuck 8 attached to the lower end of the main spindle, the main spindle It consists of a chuck opening/closing device consisting of a round rod 7 inserted into the head, a transmission device consisting of a switching gear 5 and a hydraulic cylinder 6 that change the rotation speed of the main shaft, and a position detection device 16 that detects the rotational position of the main shaft.

The main shaft 1 is pivotally supported by a main bearing 2, and the main bearing 2 and the main shaft motor 4 are fixed to a headstock frame 3.

The main shaft 1 is rotated by a motor 4 via an intermediate gear and two-stage switching teeth M5. A piston of a hydraulic cylinder 6 fixed to the head of the main shaft 1 moves up and down using a round rod 7 inserted into the main shaft 1 as a piston rod.

When the nine sticks 7 are raised, the claws of the ie quack 8 close and hold the material 9. The rotation speed of the main shaft 1 is controlled by the hydraulic cylinder 1.
2 by the vertical movement of the reciprocating rod 11 directly connected to the piston of 0.
It is possible to switch between stages. A vertical shaft motor 13 attached to the main body frame 12 can rotate in two directions, forward and reverse, and a ball screw rod 14 directly connected to the shaft is threaded through an arm 15 of the headstock frame 3, so that the headstock frame can rotate up and down. It is fixed to the main body frame so that it can only move freely. The headstock frame 3 can be moved up and down by rotation of the motor 13 in two directions, forward and reverse.

The position detection device 16 consists of a pulley and belt 18 attached to the main shaft.
It is rotated by the pulley 17 and used for position detection during thread cutting.

As shown in Figs. 1 and 2, the work index table mechanism consists of a work index table (hereinafter referred to as the table) 22, a table indexing motor 23, a frame 24 that supports the table and the indexing motor, and a center of the main shaft. It consists of a hydraulic cylinder 25 that reciprocates horizontally toward a perpendicular line, and a material extrusion device that extrudes a material 9 placed on a table.

The table 22 and the indexing motor 23 are fixed to the frame 24, the plate 27 is attached to the frame 24, and the hydraulic cylinder 25 is fixed to the main body frame. Piston rod 2
By the horizontal reciprocating movement of 6, the table 22 can move forward and backward toward the perpendicular line to the center of the spindle. Next, a material supply mechanism for automatically feeding the material placed on the table to the spindle will be explained.

Among the material trays 28 provided at equal intervals around the circumference of the table 22, the center of the tray facing the main shaft is in a relationship that can coincide with the center line of the corresponding main shaft during horizontal movement, and the vertical frame 30 at the bottom of the tray is It fits into the through hole 29 of the table 22. A material extrusion device attached to an arm 31 extending from the front end of the frame 24 faces a vertical frame 30 in which an extrusion bin 33 directly connected to a piston rod of a hydraulic cylinder 32 is located directly below the main shaft 1. When the piston of the hydraulic cylinder 32 is projected upward, the vertical frame 30 is pushed upward. The worm wheel 34 attached to the lower end of the rotating shaft of the table 22 is marked] Output motor 23
The worm 35 is connected directly to the shaft of the worm 35. Index motor 2
3, the table 22 can be rotated at equal angles.

The turret mechanism is as shown in Fig. 2, Fig. 3, and Fig. 3a.
The two turret tool rests 38 are moved forward and backward toward the center line of the main shaft 1, respectively.The horizontal axis motor 39 and the tool rest 38
motor 40 for indexing, turret frame 41 and turret 38
It consists of a car pick coupling 42, a hydraulic cylinder 43, and a cutting tool, i.e., a cutting tool 44.

The rotating shaft 52 of the tool post 38 is directly connected to a piston 53 in the hydraulic cylinder 43, and the rod of the piston 53 is connected to an inverted bowl-shaped spur tooth [j54] at its lower part. When the piston 53 is pushed upward, the turret tool rest 38 and the curvic coupling 42 float up, and the indexing motor 40 drives the spur gear 54 by the bevel gear 55 and pinion 56 to rotate the rotating shaft 52. The tool rest 38 is indexed by rotation.

When indexing is completed, the piston 53 is lowered by hydraulic pressure, and the turret and curvic coupling are engaged to complete indexing. The turret frame 41 has a horizontal axis motor 39
Since it is horizontally movable in order to be screwed together with the ball screw rod 57 which rotates through transmission between a pulley and a belt, it moves forward and backward by forward and reverse rotation of the motor 39 to perform cutting.

Although the turret tool rest with a fixed tool is shown in Fig. 3.3a, the bore is replaced with the turret tool rest with a rotary tool shown in Fig. 8 to provide a mounting structure.

In FIG. 7, one gear @51 is provided on the tool post frame, the lower end of which is connected to the rotary tool motor 37 via a pulley and a belt, and the upper end of which is provided with a bevel gear. The bevel gear that meshes with this bevel gear is placed at one end, and the rotating tool 4 is attached to the other end.
The horizontal rotating shaft having a temperature of 6° C. is maintained at 0.degree. When the tool rest 38 is rotated by the rotating shaft 52 and the bevel gear at the upper end of the gear shaft 51 and the bevel gear at the end of the horizontal rotating shaft are engaged, the rotating tool 46 can be rotated. In this case, the main spindle is stopped and the material is stopped for processing.

FIG. 8 shows a rotary tool 46 connected to a vertical rotary holder 49.
The relationship between the gear shaft and the gear shaft for rotating is shown.

The configuration other than the rotary tool mechanism in FIG. 7 is the same as the configuration of the turret tool rest shown in FIG. 3a.

Although not shown in the drawings, one of the two tool rests may be equipped with a fixed tool and the other with a rotary tool to form a dual-purpose tool rest mechanism.

Each of the hydraulic cylinders of the three mechanisms, that is, the headstock mechanism, work index table mechanism, and tool rest mechanism, is moved by a hydraulic system 58 consisting of an oil tank, a pump, and a motor.

The numerical control device consists of a numerical control panel 59 and an operation panel 60 for operating the same.A work program is first installed from the operation panel 60 to the numerical control panel 59, and then when an operation command is transmitted, each motor and each hydraulic cylinder are controlled. are each operated by a built-in program.

Means 2 for solving the zero-to-zero problem The present inventor has further obtained a second invention in addition to the above-mentioned specific invention. That is, in the present invention, in a headstock mechanism consisting of one main spindle, the headstock is fixed and does not move up and down, and in a turret mechanism consisting of two turrets, both of the turrets can move up and down. , the range of movement of the tool rest relative to the material gripped by the tip of the spindle was set to Ogaki. The other configurations are the same as those of the specific invention.

Embodiments of the present invention will be described in more detail with reference to the drawings. Fig. 4 differs from Fig. 1 of the specified invention in that the headstock frame does not have a vertical movement mechanism;
Figure a is the same as Figure 1a. The work index table mechanism is exactly the same as the structure shown in FIGS. 1 and 2.3 showing the specific invention. In Figures 5, 6 and 6a,
2. A vertical axis motor 13 is provided for each of the 1s turrets,
The ball screws 14 attached to each rotating shaft are screwed together with female threads in the through holes of each tool rest frame 41, and the tool rest moves up and down by forward and reverse rotation of the vertical axis motor to perform cutting.

The other configuration and operation of the tool post mechanism are the same as the tool post mechanism in the specified invention, and it is possible to interchange the vertically movable turret tool post with a fixed tool and the vertically movable turret tool post with a rotary tool. shall be.

Also, like the specific invention, it is possible to install a dual-purpose tool rest.

Each hydraulic cylinder of the three mechanisms in the present invention includes an oil tank,
It is operated by a hydraulic system 58 consisting of a pump and a motor.

The mechanism and operation of the numerical control device are the same as in the specific invention.

f action and the effect of invention The main points of the functions of the structure of the present invention will be explained below.

In the embodiment shown in Figure 1.2.3.4.5.6, the spindle picks up the ○ material on the work index table, and then the ejector pin pushes up the saucer and at the same time the spindle rises. Subsequently, the work index table is retracted, and the two tool rests are respectively advanced toward the spindle to perform the same or different cutting operations. When the cutting process is completed, the tool post retreats, the work index table moves forward, the main shaft that grips the cut material is lowered, and the cut material is fitted into the receiving tray. The work index table is then rotated to position the raw material.

The turret tool post with fixed tools can be used for cutting inside and outside diameters, drilling holes,
Although it is limited to machining such as wood cutting and cutting off, the turret tool rest with a rotary tool can perform horizontal hole drilling, end milling, slitting, eccentric hole drilling, flattening, etc. Also, it can be used with fixed tools and rotary tools. A dual-purpose tool post can perform both of the above-mentioned processes at the same time. Therefore, the compatibility of the turret tool rest with a fixed tool, the turret tool rest with a rotary tool, and the dual-purpose tool rest of the present invention makes it possible to perform a wide variety of processing.

[Brief explanation of the drawing]

Fig. 1 is a side view of the embodiment of the present invention, Fig. 1a is a sectional view of its headstock, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is a front view of Fig. 1. 4 is a side view 1 of the embodiment of the present invention, FIG. 4a is a sectional view of the headstock,
Fig. 5 is a plan view of Fig. 4, Fig. 6 [¥1 is a front view of Fig. 4, Fig. 6a is a cross-sectional view of the tool rest, Fig. 7 is a cross-sectional view of the tool rest with a horizontal rotating tool, Fig. 8 is a sectional view of a tool rest with a vertically rotating tool. 1... Main shaft, 2... Main bearing, 3... Headstock frame, 4... Main shaft motor, 5... Two-stage switching tooth weight, 6...
... Hydraulic cylinder, 7... Round rod, 8... Nower chuck, 9... Material, 10... Hydraulic cylinder, 11
...Reciprocating rod, 12...Body frame, 13.
・Vertical axis motor, 14... Zoll screw rod, 15...
Headstock frame bowl, 16... Position detection device, 17... f-IJ, 18... Belt, 19.
... Cylinder, 22... Work index table, 23... Index motor, 24... Frame, 25... Hydraulic cylinder, 26... Piston rod, 27... Plate,
28... saucer, 29... through hole, 30
...Vertical frame, 31... Frame arm, 32... Hydraulic cylinder, 33... Push-out pin, 34... Worm wheel, 35... Worm, 37...
・Tool rotation motor, 38...Turret tool rest, 39...Horizontal axis motor, 40... Index motor, 4
1... Turret frame, 42... Curvic coupling, 43... Hydraulic cylinder, 44... Bit, 45...
・Sliding base, 46... Rotating tool, 47... Fixed vertical holder, 48... Horizontal rotating holder, 49... Vertical rotating holder, 51... Gear shaft, 52... Rotating shaft, 53...
・Piston, 54...Spur gear, 55...Bevel gear, 56...Pinion, 51...Ball gear, 58...Hydraulic system, 59...Numerical control panel,
60...Operation panel.

Claims (2)

[Claims] (1) It consists of three mechanisms: the headstock mechanism, work index table mechanism, and tool post mechanism, and a numerical control mechanism that operates in conjunction with these mechanisms.The headstock mechanism consists of a vertical headstock that can move up and down, and a material at the tip. The work index table mechanism consists of one main shaft with a gripping function, and the work index table mechanism is such that, among the material receiving trays provided at equal intervals around the entire periphery of a rotatable circular table, the material receiving tray facing the main shaft is aligned with the center line of the main shaft. The tool rest mechanism is capable of horizontal reciprocating movement toward the main shaft, and material feeding operation can be performed at the point where its center line coincides with the center of the material receiving tray, and the tool rest mechanism simultaneously performs the same movement in response to the movement of the main shaft. Or it consists of two turrets that operate differently,
Each of the tool rests is capable of horizontal movement toward the center line of the spindle, and can be replaced with either a fixed tool type or a rotating tool type, or a fixed tool and a rotating tool type, and the numerical control mechanism is 1. A vertical numerically controlled lathe with a work index table, characterized in that a work program can be stored and the various mechanisms described above can be operated. (2) It consists of three mechanisms: a headstock mechanism, a work index table mechanism, and a turret model, and a numerical control mechanism that operates in conjunction with these mechanisms.The headstock mechanism has a fixed vertical headstock and a material gripping function at the tip. The work index table mechanism consists of a rotatable circular table whose material trays are arranged at equal intervals around the entire periphery, and the material trays facing the main shaft face toward the center line of the spindle. The tool post mechanism is capable of horizontal reciprocating movement and performs a material feeding operation at a point where its center line coincides with the center of the material receiving tray, and the tool post mechanism is capable of simultaneously performing the same or different actions in response to the movement of the main shaft. Each turret can move vertically and horizontally reciprocate toward the center line of the spindle, and can be a fixed tool type or a rotary tool type, or can be used as both a fixed tool and a rotary tool. 1. A vertical numerically controlled lathe with a work index table, characterized in that any of the formulas can be replaced, and the numerically controlled mechanism can store a work program and operate each of the mechanisms.